The economic case for air pollution action has been outlined in the past, but never with the strength that it will have during this year’s International Day of Clean Air for Blue Skies (September 7). New findings by UNEP and its convened Climate and Clean Air Coalition (CCAC) will be at the centre of the 2026 campaign, with the launch of a UNEP Spotlight Report based on the Global Economic Assessment of Integrated Climate and Clean Air Action. The report examines the economic benefits of combined air pollution and climate action, among other things. Air pollution has long contributed to death and disease, undermining economic prospects and community well-being. Many sources of air pollution, such as the burning of fossil fuels and biomass, also contribute to greenhouse gas emissions, causing our planet to warm. This year’s observance emphasises the undeniable economic case of integrated climate and clean air action to support healthier populations and economic prosperity.Published on August 24, 2026